  
// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
    if (typeof exports == "object" && typeof module == "object") // CommonJS
      mod(require("../../lib/codemirror"), require("../xml/xml"), require("../javascript/javascript"), require("../css/css"));
    else if (typeof define == "function" && define.amd) // AMD
      define(["../../lib/codemirror", "../xml/xml", "../javascript/javascript", "../css/css"], mod);
    else // Plain browser env
      mod(CodeMirror);
  })(function(CodeMirror) {
    "use strict";
  
    var defaultTags = {
      script: [
        ["lang", /(javascript|babel)/i, "javascript"],
        ["type", /^(?:text|application)\/(?:x-)?(?:java|ecma)script$|^module$|^$/i, "javascript"],
        ["type", /./, "text/plain"],
        [null, null, "javascript"]
      ],
      style:  [
        ["lang", /^css$/i, "css"],
        ["type", /^(text\/)?(x-)?(stylesheet|css)$/i, "css"],
        ["type", /./, "text/plain"],
        [null, null, "css"]
      ]
    };
  
    function maybeBackup(stream, pat, style) {
      var cur = stream.current(), close = cur.search(pat);
      if (close > -1) {
        stream.backUp(cur.length - close);
      } else if (cur.match(/<\/?$/)) {
        stream.backUp(cur.length);
        if (!stream.match(pat, false)) stream.match(cur);
      }
      return style;
    }
  
    var attrRegexpCache = {};
    function getAttrRegexp(attr) {
      var regexp = attrRegexpCache[attr];
      if (regexp) return regexp;
      return attrRegexpCache[attr] = new RegExp("\\s+" + attr + "\\s*=\\s*('|\")?([^'\"]+)('|\")?\\s*");
    }
  
    function getAttrValue(text, attr) {
      var match = text.match(getAttrRegexp(attr))
      return match ? /^\s*(.*?)\s*$/.exec(match[2])[1] : ""
    }
  
    function getTagRegexp(tagName, anchored) {
      return new RegExp((anchored ? "^" : "") + "<\/\s*" + tagName + "\s*>", "i");
    }
  
    function addTags(from, to) {
      for (var tag in from) {
        var dest = to[tag] || (to[tag] = []);
        var source = from[tag];
        for (var i = source.length - 1; i >= 0; i--)
          dest.unshift(source[i])
      }
    }
  
    function findMatchingMode(tagInfo, tagText) {
      for (var i = 0; i < tagInfo.length; i++) {
        var spec = tagInfo[i];
        if (!spec[0] || spec[1].test(getAttrValue(tagText, spec[0]))) return spec[2];
      }
    }
  
    CodeMirror.defineMode("htmlmixed", function (config, parserConfig) {
      var htmlMode = CodeMirror.getMode(config, {
        name: "xml",
        htmlMode: true,
        multilineTagIndentFactor: parserConfig.multilineTagIndentFactor,
        multilineTagIndentPastTag: parserConfig.multilineTagIndentPastTag,
        allowMissingTagName: parserConfig.allowMissingTagName,
      });
  
      var tags = {};
      var configTags = parserConfig && parserConfig.tags, configScript = parserConfig && parserConfig.scriptTypes;
      addTags(defaultTags, tags);
      if (configTags) addTags(configTags, tags);
      if (configScript) for (var i = configScript.length - 1; i >= 0; i--)
        tags.script.unshift(["type", configScript[i].matches, configScript[i].mode])
  
      function html(stream, state) {
        var style = htmlMode.token(stream, state.htmlState), tag = /\btag\b/.test(style), tagName
        if (tag && !/[<>\s\/]/.test(stream.current()) &&
            (tagName = state.htmlState.tagName && state.htmlState.tagName.toLowerCase()) &&
            tags.hasOwnProperty(tagName)) {
          state.inTag = tagName + " "
        } else if (state.inTag && tag && />$/.test(stream.current())) {
          var inTag = /^([\S]+) (.*)/.exec(state.inTag)
          state.inTag = null
          var modeSpec = stream.current() == ">" && findMatchingMode(tags[inTag[1]], inTag[2])
          var mode = CodeMirror.getMode(config, modeSpec)
          var endTagA = getTagRegexp(inTag[1], true), endTag = getTagRegexp(inTag[1], false);
          state.token = function (stream, state) {
            if (stream.match(endTagA, false)) {
              state.token = html;
              state.localState = state.localMode = null;
              return null;
            }
            return maybeBackup(stream, endTag, state.localMode.token(stream, state.localState));
          };
          state.localMode = mode;
          state.localState = CodeMirror.startState(mode, htmlMode.indent(state.htmlState, "", ""));
        } else if (state.inTag) {
          state.inTag += stream.current()
          if (stream.eol()) state.inTag += " "
        }
        return style;
      };
  
      return {
        startState: function () {
          var state = CodeMirror.startState(htmlMode);
          return {token: html, inTag: null, localMode: null, localState: null, htmlState: state};
        },
  
        copyState: function (state) {
          var local;
          if (state.localState) {
            local = CodeMirror.copyState(state.localMode, state.localState);
          }
          return {token: state.token, inTag: state.inTag,
                  localMode: state.localMode, localState: local,
                  htmlState: CodeMirror.copyState(htmlMode, state.htmlState)};
        },
  
        token: function (stream, state) {
          return state.token(stream, state);
        },
  
        indent: function (state, textAfter, line) {
          if (!state.localMode || /^\s*<\//.test(textAfter))
            return htmlMode.indent(state.htmlState, textAfter, line);
          else if (state.localMode.indent)
            return state.localMode.indent(state.localState, textAfter, line);
          else
            return CodeMirror.Pass;
        },
  
        innerMode: function (state) {
          return {state: state.localState || state.htmlState, mode: state.localMode || htmlMode};
        }
      };
    }, "xml", "javascript", "css");
  
    CodeMirror.defineMIME("text/html", "htmlmixed");
  });